EP0427688A1 - Screw top closure - Google Patents

Screw top closure Download PDF

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Publication number
EP0427688A1
EP0427688A1 EP90850320A EP90850320A EP0427688A1 EP 0427688 A1 EP0427688 A1 EP 0427688A1 EP 90850320 A EP90850320 A EP 90850320A EP 90850320 A EP90850320 A EP 90850320A EP 0427688 A1 EP0427688 A1 EP 0427688A1
Authority
EP
European Patent Office
Prior art keywords
lid
flange
attachment
lid attachment
neck
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90850320A
Other languages
German (de)
French (fr)
Inventor
Jan Berglund
Mona Norén
Rudolf Gladys
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cerbo AB
Original Assignee
Cerbo AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cerbo AB filed Critical Cerbo AB
Publication of EP0427688A1 publication Critical patent/EP0427688A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/08—Threaded or like caps or cap-like covers secured by rotation engaging a threaded ring clamped on the external periphery of the neck or wall
    • B65D41/086—Threaded or like caps or cap-like covers secured by rotation engaging a threaded ring clamped on the external periphery of the neck or wall with integral internal sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation

Definitions

  • the invention refers to a closure of the type comprising a screw lid with internal threading and a separate lid attachment with external threading, said attachment being designed for application on the neck of a container to carry the removable lid, the lid attachment being in the form of an annular element with an upper part serving as support for the lid, and two concentric tubular flanges protruding downwardly therefrom, the flanges defining between them in downward direction an open pocket for receipt of the neck of the container.
  • both these are made of yielding plastic ma­terial, such as polythene.
  • Screw top closures of this type are used inter alia for sealing jars of medicine. It is often vital that tablets or the like contained in such jars are not subjected to the action of moisture from the surrounding atmosphere. It is therefore desirable for the screw top closure to be such that it effectively prevents any penetration of moisture into the jar.
  • the object of the invention is to achieve a new and im­proved screw top closure of the type described above, which will satisfy the requirement of efficient sealing in a simple manner.
  • the screw top closure proposed according to the invention for this purpose is primarily characterized in that the lid is provided with an inner tubular flange protruding downwardly from an upper portion thereof, said flange being insertable into the lid attachment and designed to be borught into sealing abutment under pressure against the inner tubular flange of the lid attachment at a lower portion thereof having reduced inner diameter in relation to the part of this flange located above.
  • Providing the lid with a tubular flange of the type described above which can be inserted into the lid attach­ment, and shaping the inner flange of the lid attachment with a lower portion with reduced inner diameter to coope­rate with the lid flange ensures an efficient seal between lid and lid attachment even if the normal seal between the lid and the upper portion of the lid attachment serving as a support therefore is deficient, e.g. because the lid has not been screwed on suffuciently tightly.
  • a reinforced seal is also obtained between the lid attachment and the neck of the container as a result of the inner flange of the lid attachment pressing against the inner side of the neck under increased pressure.
  • a lower portion of the inner flange of the lid is provided with an external peripheral enlarged rim by means of which it can be brought into abutment with the inner flange of the lid attachment.
  • This rim gives rise to added rigidity in the lid flange at the part intended to abut against the inner flange of the lid attachment, thus facilitating obtaining a high abutment pressure.
  • the inner flange of the lid attachment may preferably be provided with an inner peripheral surface having a general­ly conical section located between an upper section having larger diameter and a lower section having smaller diameter, the inner flange of the lid being arranged to be brought into abutment with the inner flange of the lid attachment in a region of its inner surface located close to the transition between the generally conical section and the lower section.
  • the inner flange of the lid attachment may advantageously be provided with an outer peripheral surface having a conical section 31 along which it can be brought into abutment under pressure with the inner side of the neck of the container under influence of the inner flange of the lid.
  • Shaping the inner flange of the lid attachment as described enables the increased contact pressure caused by the lid flange between said flange of the lid attachment and the neck of the container to be concentrated to a limited area. This facilitates obtaining an efficient seal between the lid attachment and the container.
  • the screw top closure may suitably be used as an original seal for a container.
  • suitable sealing members may advantageously comprise a sealing ring joined by breakable bridges in a manner known per se to the lower part of the wall of the lid, said ring being designed to be separated from the lid when the lid is unscrewed from the lid attachment, due to the action of protrusions in the outer tubular flange of the lid attach­ment protruding into notches in the sealing ring.
  • the screw top closure shown in the drawings consists of a screw lid 10 with internal threading and a lid attachment 11 with external threading, designed to removably carry the screw lid on the neck 12 of a container 13.
  • the container comprises a small jar.
  • the lid attachment 11 is in the form of an annular element with an upper part 14 serving as support for the lid 10, and two concentric tubular flanges 15 and 16. Between them in downward direction these two flanges define an open pocket 17 in the lower part of which the neck 12 is received when the lid attachment is applied on the container 13.
  • said attachment is provided with an annular protrusion 18 protruding from the inner side of the outer flange 15, said protrusion being designed to cooperate with an outer peripheral rim 19 of the neck 12.
  • the lid attachment 11 is also provided with an annular shoulder 20 on the outer side of the inner flange 16 which serves as sealing lip and stop and abuts against the upper edge of the neck 12.
  • the screw lid 10 is provided with an upper portion 21 in the form of a substantially flat, circular disc and a wall part 22 protruding from its peripheral edge, said wall part being provided with threading for cooperation with corresponding threading on the outer side of the outer flange 15 of the lid attachment 11.
  • the upper part 21 of the lid is provided on its lower side with an annular protrusion 23 enabling it to abut firmly against the upper surface of the upper section 14 of the lid attachment.
  • the upper part 21 of the lid is also provided with an annular sealing lip 24 located a short disance inside the protrusion 23.
  • the inner flange 16 of the lid attachment 11 is provided with an inner peripheral surface having a generally conical section 30 located between an upper section 28 having larger diameter and a lower section 29 having smaller diameter.
  • the tubular inner flange 25 of the lid 10 is arranged, when inserted into the lid attachment 11, to be brought into abutment with the flange 16 close to the transition between the conical section 30 and the lower section 29 of this surface.
  • the outer peripheral surface of the flange 16 is also shaped with a conical section 31 and can thus be brought into abutment under pressure with the neck 12 of the con­tainer 13 along a portion of this section 31 under the in­fluence of flange 25 of the lid.
  • the lid 10 is provided at the lower edge of the wall 22 with a sealing ring 33 joined to this wall by breakable bridges 32.
  • This ring is provided internally with a number of notches 34 provided with stop surfaces 35 at one end which, when the lid 10 is unscrewed from the lid attachment, can catch on hook-shaped protrusions 36 on the outer flange 15 of the lid attachment.
  • the sealing ring 33 will thus be torn from the lid 10 when this is unscrewed from the lid attachment 11.
  • the closure When the closure is applied on the container 13 it is first assembled by screwing the lid 10 onto the lid attach­ment 11.
  • the embodiment with protrusions 36 shown in Figure 4 ensures that the sealing ring 33 can be inserted over the protrusions without the risk of being torn from the lid.
  • the closure assembled in this way is then pressed onto the neck 12 of the container, whereupon the lid attachment will snap into engagement therewith.

Abstract

A screw top closure comprising a screw lid (10) with in­ternal threading and a separate lid attachment (11) with external threading. The lid attachment (11) is designed for application on the neck (12) of a container (13) to carry the removable lid, the lid attachment (11) being in the form of an annular element with an upper part (14) serving as support for the lid (10), and two concentric tubular flanges (15, 16) protruding downwardly therefrom. These flanges between them in downward direction define an open pocket (17) for receipt of the neck (12) of the container (13). The lid (10) is provided with an inner tubular flange (25) protruding downwardly from an upper portion (21) thereof, said flange being insertable into the lid attachment (11) and designed to be brought into sealing abutment under pressure against the inner tubular flange (16) of the lid attachment (11) at a lower portion (16) thereof having reduced inner diameter in relation to the part of this flange (16) located above.

Description

    TECHNICAL FIELD
  • The invention refers to a closure of the type comprising a screw lid with internal threading and a separate lid attachment with external threading, said attachment being designed for application on the neck of a container to carry the removable lid, the lid attachment being in the form of an annular element with an upper part serving as support for the lid, and two concentric tubular flanges protruding downwardly therefrom, the flanges defining between them in downward direction an open pocket for receipt of the neck of the container.
  • To achieve sufficient elasticity in the lid and the lid attachment, both these are made of yielding plastic ma­terial, such as polythene.
  • Screw top closures of this type are used inter alia for sealing jars of medicine. It is often vital that tablets or the like contained in such jars are not subjected to the action of moisture from the surrounding atmosphere. It is therefore desirable for the screw top closure to be such that it effectively prevents any penetration of moisture into the jar.
  • The object of the invention is to achieve a new and im­proved screw top closure of the type described above, which will satisfy the requirement of efficient sealing in a simple manner.
    • CHARACTERIZATION OF THE INVENTION
  • The screw top closure proposed according to the invention for this purpose is primarily characterized in that the lid is provided with an inner tubular flange protruding downwardly from an upper portion thereof, said flange being insertable into the lid attachment and designed to be borught into sealing abutment under pressure against the inner tubular flange of the lid attachment at a lower portion thereof having reduced inner diameter in relation to the part of this flange located above.
  • Providing the lid with a tubular flange of the type described above which can be inserted into the lid attach­ment, and shaping the inner flange of the lid attachment with a lower portion with reduced inner diameter to coope­rate with the lid flange ensures an efficient seal between lid and lid attachment even if the normal seal between the lid and the upper portion of the lid attachment serving as a support therefore is deficient, e.g. because the lid has not been screwed on suffuciently tightly. A reinforced seal is also obtained between the lid attachment and the neck of the container as a result of the inner flange of the lid attachment pressing against the inner side of the neck under increased pressure.
  • In a preferred embodiment of the invention a lower portion of the inner flange of the lid is provided with an external peripheral enlarged rim by means of which it can be brought into abutment with the inner flange of the lid attachment. This rim gives rise to added rigidity in the lid flange at the part intended to abut against the inner flange of the lid attachment, thus facilitating obtaining a high abutment pressure.
  • The inner flange of the lid attachment may preferably be provided with an inner peripheral surface having a general­ly conical section located between an upper section having larger diameter and a lower section having smaller diameter, the inner flange of the lid being arranged to be brought into abutment with the inner flange of the lid attachment in a region of its inner surface located close to the transition between the generally conical section and the lower section. The inner flange of the lid attachment may advantageously be provided with an outer peripheral surface having a conical section 31 along which it can be brought into abutment under pressure with the inner side of the neck of the container under influence of the inner flange of the lid.
  • Shaping the inner flange of the lid attachment as described enables the increased contact pressure caused by the lid flange between said flange of the lid attachment and the neck of the container to be concentrated to a limited area. This facilitates obtaining an efficient seal between the lid attachment and the container.
  • The screw top closure may suitably be used as an original seal for a container. To allow visual inspection to ascer­tain that the seal is unbroken it should be provided with suitable sealing members. According to the invention such sealing members may advantageously comprise a sealing ring joined by breakable bridges in a manner known per se to the lower part of the wall of the lid, said ring being designed to be separated from the lid when the lid is unscrewed from the lid attachment, due to the action of protrusions in the outer tubular flange of the lid attach­ment protruding into notches in the sealing ring.
    • DRAWING
  • The invention will be described in more detail with re­ ference to the accompanying schematic drawings in which
    • Figure 1a shows a front view of a screw lid for a screw top closure in accordance with one embodiment of the in­vention selected by way of example,
    • Figure 1b shows a front view of a lid attachment for said closure,
    • Figure 1c shows a front view of the closure composed of the screw lid and lid attachment,
    • Figure 1d shows a front view of an upper part of a container with a neck intended to be sealed by the closure,
    • Figure 1e shows a front view of the container with the closure applied,
    • Figure 2 shows a partial vertical section of the closure and neck of the container on a larger scale,
    • Figure 3 shows a detailed view, in cross section, along the line III-III in Figure 2, and
    • Figure 4 shows a section of the lid attachment correspon­ding to Figure 2, further enlarged, prior to application of the lid on the lid attachment and prior to application thereof on the neck of the container.
    EMBODIMENTS
  • The screw top closure shown in the drawings consists of a screw lid 10 with internal threading and a lid attachment 11 with external threading, designed to removably carry the screw lid on the neck 12 of a container 13. In the example shown the container comprises a small jar.
  • The lid attachment 11 is in the form of an annular element with an upper part 14 serving as support for the lid 10, and two concentric tubular flanges 15 and 16. Between them in downward direction these two flanges define an open pocket 17 in the lower part of which the neck 12 is received when the lid attachment is applied on the container 13.
  • To enable firm retention of the lid attchment 11 in snap engagement with the neck 12 of the container 13, said attachment is provided with an annular protrusion 18 protruding from the inner side of the outer flange 15, said protrusion being designed to cooperate with an outer peripheral rim 19 of the neck 12. The lid attachment 11 is also provided with an annular shoulder 20 on the outer side of the inner flange 16 which serves as sealing lip and stop and abuts against the upper edge of the neck 12.
  • The screw lid 10 is provided with an upper portion 21 in the form of a substantially flat, circular disc and a wall part 22 protruding from its peripheral edge, said wall part being provided with threading for cooperation with corresponding threading on the outer side of the outer flange 15 of the lid attachment 11. The upper part 21 of the lid is provided on its lower side with an annular protrusion 23 enabling it to abut firmly against the upper surface of the upper section 14 of the lid attachment. The upper part 21 of the lid is also provided with an annular sealing lip 24 located a short disance inside the protrusion 23.
  • 25 designates a tubular flange protruding downwardly from the upper part 21 of the lid 10, said flange being insert­able into the lid attachment and having an external peri­pheral enlarged rim by means of which it can be brought into sealing abutment under pressure against the inner side of the lower part 27 of the inner flange 16 of the lid attachment 11.
  • As can be seen most clearly in Figure 4, the inner flange 16 of the lid attachment 11 is provided with an inner peripheral surface having a generally conical section 30 located between an upper section 28 having larger diameter and a lower section 29 having smaller diameter. The tubular inner flange 25 of the lid 10 is arranged, when inserted into the lid attachment 11, to be brought into abutment with the flange 16 close to the transition between the conical section 30 and the lower section 29 of this surface. The outer peripheral surface of the flange 16 is also shaped with a conical section 31 and can thus be brought into abutment under pressure with the neck 12 of the con­tainer 13 along a portion of this section 31 under the in­fluence of flange 25 of the lid.
  • To enable the closure to be used as an original closure the lid 10 is provided at the lower edge of the wall 22 with a sealing ring 33 joined to this wall by breakable bridges 32. This ring is provided internally with a number of notches 34 provided with stop surfaces 35 at one end which, when the lid 10 is unscrewed from the lid attachment, can catch on hook-shaped protrusions 36 on the outer flange 15 of the lid attachment. The sealing ring 33 will thus be torn from the lid 10 when this is unscrewed from the lid attachment 11.
  • When the closure is applied on the container 13 it is first assembled by screwing the lid 10 onto the lid attach­ment 11. The embodiment with protrusions 36 shown in Figure 4 ensures that the sealing ring 33 can be inserted over the protrusions without the risk of being torn from the lid. The closure assembled in this way is then pressed onto the neck 12 of the container, whereupon the lid attachment will snap into engagement therewith.

Claims (6)

1. A screw top closure comprising a screw lid (10) with internal threading and a separate lid attachment (11) with external threading, said attachment being designed for application on the neck (12) of a container (13) to carry the removable lid, the lid attachment (11) being in the form of an annular element with an upper part (14) serving as support for the lid (10), and two concentric tubular flanges (15, 16) protruding downwardly therefrom, the flanges defining between them in downward direction an open pocket (17) for receipt of the neck (12) of the con­tainer (13), wherein the lid (10) is provided with an inner tubular flange (25) protruding downwardly from an upper portion (21) thereof, said flange being insertable into the lid attachment (11) and designed to be brought into sealing abutment under pressure against the inner tubular flange (16) of the lid attachment (11) at a lower portion (16) thereof having reduced inner diameter in relation to the part of this flange (16) located above.
2. A screw top closure as claimed in claim 1, wherein a lower portion of the inner flange (25) of the lid (10) is provided with an external peripheral en­larged rim (26) by means of which it can be brought into abutment with the inner flange (16) of the lid attachment (11).
3. A screw top closure as claimed in claim 1 or 2, wherein the inner flange (16) of the lid attachment (11) is provided with an inner peripheral surface having a generally conical section (30) located between an upper section (28) having larger diameter and a lower section (29) having smaller diameter, the inner flange (25) of the lid (10) being arranged to be brought into abutment with the inner flange (16) of the lid attachment (11) in a region of its inner surface located close to the transition between the generally conical section (30) and the lower section (29).
4. A screw top closure as claimed in claim 3, wherein the inner flange (16) of the lid attachment (11) is provided with an outer peripheral surface having a conical section (31) along which it can be brought into abutment under pressure with the inner side of the neck (12) of the container (13) without being influenced by the inner flange (25) of the lid (10).
5. A screw top closure as claimed in any of the prece­ding claims, being provided with sealing means (33) to seal a container (13) closed by means of the closure, wherein said sealing means comprise a sealing ring (33) joined by breakable bridges (32) in a manner known per se to the lower part of the wall (22) of the lid (10), said ring being designed to be separated from the lid (10) when the lid (10) is unscrewed from the lid attachment (11), due to the action of protrusions (36) in the outer tubular flange (15) of the lid attachment (11) protruding into notches (34) in the sealing ring.
6. A screw top closure as claimed in any of the prece­ding claims wherein the outer tubular flange (15) of said lid attachment (11) on its lower part at the inside thereof is provided with protusion (18) arranged to coope­rate with an outer peripheral rim (19) of the outer part of said neck (12) and wherein the inner flange (16) of said lid attachment (11) at its upper part forms a downwardly conically tapered sealing surface (31) arranged to cooperate with the upper inner edge zone of said neck (12) during the cooperation of said protrusions (18, 19).
EP90850320A 1989-10-04 1990-09-27 Screw top closure Withdrawn EP0427688A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8903251 1989-10-04
SE8903251A SE468206B (en) 1989-10-04 1989-10-04 SCREW LOCK Closure, INCLUDING AN INTERNAL THREADED SCREW LOCK AND A SEPARATE, EXTERNALLY LOCKED LOCK PART

Publications (1)

Publication Number Publication Date
EP0427688A1 true EP0427688A1 (en) 1991-05-15

Family

ID=20377044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90850320A Withdrawn EP0427688A1 (en) 1989-10-04 1990-09-27 Screw top closure

Country Status (5)

Country Link
US (1) US5105961A (en)
EP (1) EP0427688A1 (en)
JP (1) JPH0767948B2 (en)
CA (1) CA2027203A1 (en)
SE (1) SE468206B (en)

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WO2014058555A1 (en) * 2012-10-11 2014-04-17 Owens-Brockway Glass Container Inc. Container, closure, and package
US11919687B2 (en) 2021-11-30 2024-03-05 Owens-Brockway Glass Container Inc. Package, container, closure assembly, and closure components

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EP1609385A1 (en) * 2003-11-19 2005-12-28 The Procter & Gamble Company Refill container
EP1609385A4 (en) * 2003-11-19 2010-08-18 Procter & Gamble Refill container
WO2014058555A1 (en) * 2012-10-11 2014-04-17 Owens-Brockway Glass Container Inc. Container, closure, and package
US9051074B2 (en) 2012-10-11 2015-06-09 Owens-Brockway Glass Container Inc. Container, closure, and package
CN104703885A (en) * 2012-10-11 2015-06-10 欧文斯-布洛克威玻璃容器有限公司 Container, closure, and package
US9409681B2 (en) 2012-10-11 2016-08-09 Owens-Brockway Glass Container Inc. Container, closure, and package
EP3170758A1 (en) * 2012-10-11 2017-05-24 Owens-Brockway Glass Container Inc. Container closure
AU2013330329B2 (en) * 2012-10-11 2017-06-08 Owens-Brockway Glass Container Inc. Container, closure, and package
CN104703885B (en) * 2012-10-11 2018-09-14 欧文斯-布洛克威玻璃容器有限公司 Container, closure member and packaging
EP3421382A1 (en) * 2012-10-11 2019-01-02 Owens-Brockway Glass Container Inc. Container, closure, and package
EP3421383A1 (en) * 2012-10-11 2019-01-02 Owens-Brockway Glass Container Inc. Container, closure, and package
US11919687B2 (en) 2021-11-30 2024-03-05 Owens-Brockway Glass Container Inc. Package, container, closure assembly, and closure components

Also Published As

Publication number Publication date
JPH0767948B2 (en) 1995-07-26
US5105961A (en) 1992-04-21
SE468206B (en) 1992-11-23
CA2027203A1 (en) 1991-04-05
SE8903251D0 (en) 1989-10-04
SE8903251L (en) 1991-04-05
JPH03176373A (en) 1991-07-31

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